package com.rytx.common.utils;

import java.util.Random;

public class CreateNameUtils {

    public static String getStringRandom(int length) {
        String val = "";
         Random random = new Random();
         //参数length，表示生成几位随机数
        for(int i = 0; i < length; i++) {
                 String charOrNum = random.nextInt(2) % 2 == 0 ? "char" : "num";
                 //输出字母还是数字
                if( "char".equalsIgnoreCase(charOrNum) ) {
                        //输出是大写字母还是小写字母
                         int temp = random.nextInt(2) % 2 == 0 ? 65 : 97;
                         val += (char)(random.nextInt(26) + temp);
                    } else if( "num".equalsIgnoreCase(charOrNum) ) {
                        val += String.valueOf(random.nextInt(10));
                    }
             }
        return val;
    }
}
